We probably want to have more than one locking mechanism to ensure that it's hard to break down the door.

Door reinforcements

We should ensure that we have a strike plate on the outside of the door. It should be laser or watercut 3 or 4mm sheet steel of high quality.

The CCC Lock

Some people in the CCC are creating an open source lock ( code can be found on their svn system ). It's based on the burgwächter TSE3000 cylinder, externally driven by their own custom electronics. It uses the Sputnik air interface for a simple crypto protocol. Hopefully the lock is in a state where we can replicate it in the near future.